. >>> a visibly angry president obama is calling this a shameful day after most senate republicans and a handful of democrats combined to vote down key measures intended to tighten federal gun control laws. >> the amendment is not agreed to. >> in rapid succession, the senate blocked measures that would have expanded background checks for gun purchase. president obama met with the victims of the newtown school shooting victims. he denounced senators who he said caved to political pressure. >> families that know unspeakable grief summon the petition to fight there local leaders not to honor the memory of their children, but to protect the lives of all of our children. >> a few minutes ago, a minority in the united states senate decided it wasn't worth it. they blocked common sense reforms even while these families looked on from the senate gallery. >> it vowed they would do everything they can to protect americans without congress. he says the 20 children demand it. >> at&t is offered a $250,000 reward for information on what investigators say appears to be a, quote, coridated sabotage